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Application using Excel and C# to read search and write a workbook

Need to create a application in C# with Win Forms the applications need to do the following:
1.Open a excel workbook in the background the user should not see this step
2. Then save the data in some way to the application so it can be accessed later
3. Receive a 8 digit identification code from a text box and search for a entry in the excel workbook containing the same digit
4.When the relevant entry is found the application should write the current time and date to a cell Sign-In and at the specific date the entry is done.
5. The application should then save the workbook automatically and
6.Then close the application.
Can anyone help me please the Microsoft.Office.Interop is very complicated.

Try closedXML, it sits on top of Excel Interop and makes things easier.
But with out any examples of what you have tried it is really hard to tell you how to accomplish what you want.

If you don't have old-excel support (.xls), you can use Wrapper.OpenXml which available as Nuget package.

Excel 2003 bug at the 1st launch after creating file from c#

I am creating a new .xls file for the Microsoft Office 2003 from existing template in C# using .NET 4.0 and Excel Interop Object Library. My template already contains all needed data and various formulas so my task is just to change some cells which are used in formulas as parameters. I do this without any problem...
The problem appears when i try to open my new file: when the file is opened at 1st time addins of excel doesnt work and as the result all the formulas show me error messages like "#NAME". When i launch the file again - everything is ok...
This makes me angry....
Does anybody know where the problem could be? And what is the solution??
Thank you in advance.

Do you open it Excel 2010? If so, then Excel thinks it's with macros and displays it incorrectly.
Basically, #Name error appears when the formula inside the cell can't be interpreted or is unknown.
The problem is related to the path of formulas, I guess in the first launch it can't correctly find the formulas path so in the next launches it shows them correctly.

Exporting Listview in Visual Studio Into Microsoft Excel

I am new in creating Report System using Visual Stuido 2010 C#. I already have a listview in my forms where it has all the information needed for the report. I am planning to integrate it with Microsoft Excel. What I want is that the user is capable of exporting the reports in the listview into Microsoft Excel. Is there anything I can read or research on how to do this? Or is it even possible? Please help. Thanks.

see:
http://www.dotnetlogix.com/article/aspnet/56/How-to-export-listview-in-excel-in-asp.net.html
http://www.c-sharpcorner.com/UploadFile/DipalChoksi/ExportASPNetDataGridToExcel11222005041447AM/ExportASPNetDataGridToExcel.aspx

Iterate the data source and write values into CSV (comma separated) file. I think this will be the simplest way. (Must read article : Why are the Microsoft Office file formats so complicated? (And some workarounds) by Joel Spolsky).

C# program runs too long mapping to an excel sheet

I have a C# program that takes a legacy report file and maps to an Excel. It was running ok but we changed the process. The legacy program groups all the detail rows together and my program breaks page rather than before when they provided all the pages. this had added to run time about 4 times as long.
I have been told that if I can manually modify Excel to create 'proper' output for input file, It can speed things up a good bit.
also go to an Excel code-behind or add-in which would run from Dxcel and thus be faster
Can someone direct me how to apply these 2 ideas?
We do the code now as an array and write the entire row rather than cell by cell.
here is copy of the code: http://www.mediafire.com/?cebg17u5wl0ir25

Automation of Office applications is generally very slow. I just encountered this problem while trying to create a complicated graphic with Visio form c# code. It lasted about 30s. Now i create a SVG-File, that is then opened in Visio. Creating the SVG-File lasts less than 1s now!
I suggest that you export your data as CSV-File and then import it into Excel. Do only the minimum, i.e. the creation of worksheets, the import of the CSV and the formatting, with Excel-automation.

C# output to Excel spreadsheet, using Excel 2000+

I'm writing a program that reads a text file, extracts information, and outputs it to a template Excel spreadsheet that already exists.
I've managed to do this on my computer using the Microsoft.Office.Interop.Excel reference and its related methods, and it works fine. I have Excel 2010. However the computers that this program will be used on mostly have either Excel 2000 or Excel 2003, and it won't work on them.
Does anyone know a way to make a program target all versions of Excel from 2000 upwards?
Cheers,
Greg

If your needs are simple and you don't have $900 for Aspose.Cells to throw around, you can do any of the following:
Use NPOI to read, inject data into, and export your template.
Create a basic HTML file with a table and just named it *.xls. You can save your template in Excel as HTML and replace bits and pieces to insert your data.
Create an XML file using Office 2002/2003 XML format, it's pretty straightforward (caveat: can't be read in Excel 2000). As above, you can save your template in XML Spreadsheet format, read it in, and do some simple stuff to inject your data.

You really need to target 2000 or under. 2010 and 2003 will open a 2000 format document whereas 2000 will not open a 2010 document. Office has a single format for 97-2000 and that's what you need to create to make everybody happy.
Interop depends on the version you have installed and I personally have dodged using interop due to its "unmanaged" nature (and it seems to love file locks).
If you want hassle free and extremely fast/powerful creation of Excel documents, you really can not do better than Aspose.Cells in my opinion.
Find it here.